ENERGY BALANCE OF SUGAR BEET GROWING

Hnilicka F., Urban J., Pulkrabek J., Hnilickova H.: Energy balance of sugar beet growing During 2002-2004 small plot trials were established at the experimental Station of University of Life Sciences in Prague in Cerveny Ujezd. Two sugar beet cultivars were included in the experiment (Takt and Compass), which were grown by standard and intensive growing technology. Obtained results of energy balance show, that energy content of the main product (root) ranged from 758.91 GJ.ha(-1).year(-1) (Compass, intensive technology, 2003) to 1 784.12 GJ.ha(-1).year(-1) (Takt, intensive technology, 2002). Specific energy consumption for the main product ranged from 0.028 (Takt, intensive technology, 2002) to 0.066 (Compass, intensive technology, 2003) and for minor product from 0,066 (Takt, standard technology, 2002) to 0.20 (Takt, standard technology, 2003). Energetic efficiency Of Sugar beet growing ranged from 21.71 units (Takt, standard technology, 2003) to 50.11 units (Takt, intensive technology, 2002). Based on calculated values Of energetic balance Of Sugar beet growing the intensive technology seems to be energetically more effective, even though that there are higher additional inputs into production. But these higher additional inputs into production increase final energetic production of biomass from area unit, which increases energetic efficiency of production.